Finding the Third Proportional to 19,580,816 and 42,415,942

Step by Step Solution

1. Step 1: Write the proportion equation
   19,580,816 : 42,415,942 = 42,415,942 : x
2. Step 2: Convert to fraction form
   19,580,816/42,415,942 = 42,415,942/x
3. Step 3: Cross multiply
   19,580,816x = 42,415,942 × 42,415,942
4. Step 4: Simplify right side
   19,580,816x = 1,799,112,135,747,364
5. Step 5: Solve for x
   x = 1,799,112,135,747,364/19,580,816
6. Step 6: Final answer
   x = 91,881,366.73