Finding the Third Proportional to 31,700.25 and 67,898.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,700.25 : 67,898.25 = 67,898.25 : x
2. Step 2: Convert to fraction form
   31,700.25/67,898.25 = 67,898.25/x
3. Step 3: Cross multiply
   31,700.25x = 67,898.25 × 67,898.25
4. Step 4: Simplify right side
   31,700.25x = 4,610,172,353.06
5. Step 5: Solve for x
   x = 4,610,172,353.06/31,700.25
6. Step 6: Final answer
   x = 145,430.16