Finding the Third Proportional to 31,689,652.50 and 69,431,825.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,689,652.50 : 69,431,825.25 = 69,431,825.25 : x
2. Step 2: Convert to fraction form
   31,689,652.50/69,431,825.25 = 69,431,825.25/x
3. Step 3: Cross multiply
   31,689,652.50x = 69,431,825.25 × 69,431,825.25
4. Step 4: Simplify right side
   31,689,652.50x = 4,820,778,357,546,538
5. Step 5: Solve for x
   x = 4,820,778,357,546,538/31,689,652.50
6. Step 6: Final answer
   x = 152,124,683.52