Finding the Third Proportional to 57,840.50 and 87,490

Step by Step Solution

1. Step 1: Write the proportion equation
   57,840.50 : 87,490 = 87,490 : x
2. Step 2: Convert to fraction form
   57,840.50/87,490 = 87,490/x
3. Step 3: Cross multiply
   57,840.50x = 87,490 × 87,490
4. Step 4: Simplify right side
   57,840.50x = 7,654,500,100
5. Step 5: Solve for x
   x = 7,654,500,100/57,840.50
6. Step 6: Final answer
   x = 132,338.07