Finding the Third Proportional to 42,592.50 and 87,916.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,592.50 : 87,916.50 = 87,916.50 : x
2. Step 2: Convert to fraction form
   42,592.50/87,916.50 = 87,916.50/x
3. Step 3: Cross multiply
   42,592.50x = 87,916.50 × 87,916.50
4. Step 4: Simplify right side
   42,592.50x = 7,729,310,972.25
5. Step 5: Solve for x
   x = 7,729,310,972.25/42,592.50
6. Step 6: Final answer
   x = 181,471.17