Finding the Third Proportional to 811,063,581 and 1,665,124,053

Step by Step Solution

1. Step 1: Write the proportion equation
   811,063,581 : 1,665,124,053 = 1,665,124,053 : x
2. Step 2: Convert to fraction form
   811,063,581/1,665,124,053 = 1,665,124,053/x
3. Step 3: Cross multiply
   811,063,581x = 1,665,124,053 × 1,665,124,053
4. Step 4: Simplify right side
   811,063,581x = 2,772,638,111,879,147,008
5. Step 5: Solve for x
   x = 2,772,638,111,879,147,008/811,063,581
6. Step 6: Final answer
   x = 3,418,521,280.98