Finding the Third Proportional to 42,557.50 and 67,356.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,557.50 : 67,356.50 = 67,356.50 : x
2. Step 2: Convert to fraction form
   42,557.50/67,356.50 = 67,356.50/x
3. Step 3: Cross multiply
   42,557.50x = 67,356.50 × 67,356.50
4. Step 4: Simplify right side
   42,557.50x = 4,536,898,092.25
5. Step 5: Solve for x
   x = 4,536,898,092.25/42,557.50
6. Step 6: Final answer
   x = 106,606.31