Finding the Third Proportional to 62,456 and 90,280

Step by Step Solution

1. Step 1: Write the proportion equation
   62,456 : 90,280 = 90,280 : x
2. Step 2: Convert to fraction form
   62,456/90,280 = 90,280/x
3. Step 3: Cross multiply
   62,456x = 90,280 × 90,280
4. Step 4: Simplify right side
   62,456x = 8,150,478,400
5. Step 5: Solve for x
   x = 8,150,478,400/62,456
6. Step 6: Final answer
   x = 130,499.53