Finding the Third Proportional to 98,280 and 147,520

Step by Step Solution

1. Step 1: Write the proportion equation
   98,280 : 147,520 = 147,520 : x
2. Step 2: Convert to fraction form
   98,280/147,520 = 147,520/x
3. Step 3: Cross multiply
   98,280x = 147,520 × 147,520
4. Step 4: Simplify right side
   98,280x = 21,762,150,400
5. Step 5: Solve for x
   x = 21,762,150,400/98,280
6. Step 6: Final answer
   x = 221,430.10