Finding the Third Proportional to 1,222,531,511.63 and 1,906,438,411.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222,531,511.63 : 1,906,438,411.69 = 1,906,438,411.69 : x
2. Step 2: Convert to fraction form
   1,222,531,511.63/1,906,438,411.69 = 1,906,438,411.69/x
3. Step 3: Cross multiply
   1,222,531,511.63x = 1,906,438,411.69 × 1,906,438,411.69
4. Step 4: Simplify right side
   1,222,531,511.63x = 3,634,507,417,557,557,760
5. Step 5: Solve for x
   x = 3,634,507,417,557,557,760/1,222,531,511.63
6. Step 6: Final answer
   x = 2,972,935,570.98