Finding the Third Proportional to 31,900,837.50 and 69,977,216.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900,837.50 : 69,977,216.25 = 69,977,216.25 : x
2. Step 2: Convert to fraction form
   31,900,837.50/69,977,216.25 = 69,977,216.25/x
3. Step 3: Cross multiply
   31,900,837.50x = 69,977,216.25 × 69,977,216.25
4. Step 4: Simplify right side
   31,900,837.50x = 4,896,810,794,099,264
5. Step 5: Solve for x
   x = 4,896,810,794,099,264/31,900,837.50
6. Step 6: Final answer
   x = 153,501,010.56