Finding the Third Proportional to 31,987,218 and 69,653,796

Step by Step Solution

1. Step 1: Write the proportion equation
   31,987,218 : 69,653,796 = 69,653,796 : x
2. Step 2: Convert to fraction form
   31,987,218/69,653,796 = 69,653,796/x
3. Step 3: Cross multiply
   31,987,218x = 69,653,796 × 69,653,796
4. Step 4: Simplify right side
   31,987,218x = 4,851,651,297,209,616
5. Step 5: Solve for x
   x = 4,851,651,297,209,616/31,987,218
6. Step 6: Final answer
   x = 151,674,687.60