Finding the Third Proportional to 56,216.25 and 85,475.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,216.25 : 85,475.50 = 85,475.50 : x
2. Step 2: Convert to fraction form
   56,216.25/85,475.50 = 85,475.50/x
3. Step 3: Cross multiply
   56,216.25x = 85,475.50 × 85,475.50
4. Step 4: Simplify right side
   56,216.25x = 7,306,061,100.25
5. Step 5: Solve for x
   x = 7,306,061,100.25/56,216.25
6. Step 6: Final answer
   x = 129,963.51