Finding the Third Proportional to 31,491,439.88 and 69,036,325.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,491,439.88 : 69,036,325.31 = 69,036,325.31 : x
2. Step 2: Convert to fraction form
   31,491,439.88/69,036,325.31 = 69,036,325.31/x
3. Step 3: Cross multiply
   31,491,439.88x = 69,036,325.31 × 69,036,325.31
4. Step 4: Simplify right side
   31,491,439.88x = 4,766,014,212,653,328
5. Step 5: Solve for x
   x = 4,766,014,212,653,328/31,491,439.88
6. Step 6: Final answer
   x = 151,343,166.00