Finding the Third Proportional to 40,478 and 61,280

Step by Step Solution

1. Step 1: Write the proportion equation
   40,478 : 61,280 = 61,280 : x
2. Step 2: Convert to fraction form
   40,478/61,280 = 61,280/x
3. Step 3: Cross multiply
   40,478x = 61,280 × 61,280
4. Step 4: Simplify right side
   40,478x = 3,755,238,400
5. Step 5: Solve for x
   x = 3,755,238,400/40,478
6. Step 6: Final answer
   x = 92,772.33