Finding the Third Proportional to 56,510 and 87,554

Step by Step Solution

1. Step 1: Write the proportion equation
   56,510 : 87,554 = 87,554 : x
2. Step 2: Convert to fraction form
   56,510/87,554 = 87,554/x
3. Step 3: Cross multiply
   56,510x = 87,554 × 87,554
4. Step 4: Simplify right side
   56,510x = 7,665,702,916
5. Step 5: Solve for x
   x = 7,665,702,916/56,510
6. Step 6: Final answer
   x = 135,652.15