Finding the Third Proportional to 42,480 and 63,432

Step by Step Solution

1. Step 1: Write the proportion equation
   42,480 : 63,432 = 63,432 : x
2. Step 2: Convert to fraction form
   42,480/63,432 = 63,432/x
3. Step 3: Cross multiply
   42,480x = 63,432 × 63,432
4. Step 4: Simplify right side
   42,480x = 4,023,618,624
5. Step 5: Solve for x
   x = 4,023,618,624/42,480
6. Step 6: Final answer
   x = 94,717.95