Finding the Third Proportional to 71,385 and 155,490

Step by Step Solution

1. Step 1: Write the proportion equation
   71,385 : 155,490 = 155,490 : x
2. Step 2: Convert to fraction form
   71,385/155,490 = 155,490/x
3. Step 3: Cross multiply
   71,385x = 155,490 × 155,490
4. Step 4: Simplify right side
   71,385x = 24,177,140,100
5. Step 5: Solve for x
   x = 24,177,140,100/71,385
6. Step 6: Final answer
   x = 338,686.56