Finding the Third Proportional to 45,320 and 99,280

Step by Step Solution

1. Step 1: Write the proportion equation
   45,320 : 99,280 = 99,280 : x
2. Step 2: Convert to fraction form
   45,320/99,280 = 99,280/x
3. Step 3: Cross multiply
   45,320x = 99,280 × 99,280
4. Step 4: Simplify right side
   45,320x = 9,856,518,400
5. Step 5: Solve for x
   x = 9,856,518,400/45,320
6. Step 6: Final answer
   x = 217,487.17