Finding the Third Proportional to 808,656,813 and 1,155,589,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   808,656,813 : 1,155,589,321.50 = 1,155,589,321.50 : x
2. Step 2: Convert to fraction form
   808,656,813/1,155,589,321.50 = 1,155,589,321.50/x
3. Step 3: Cross multiply
   808,656,813x = 1,155,589,321.50 × 1,155,589,321.50
4. Step 4: Simplify right side
   808,656,813x = 1,335,386,679,964,830,464
5. Step 5: Solve for x
   x = 1,335,386,679,964,830,464/808,656,813
6. Step 6: Final answer
   x = 1,651,363,914.21