Finding the Third Proportional to 130,018.50 and 279,436

Step by Step Solution

1. Step 1: Write the proportion equation
   130,018.50 : 279,436 = 279,436 : x
2. Step 2: Convert to fraction form
   130,018.50/279,436 = 279,436/x
3. Step 3: Cross multiply
   130,018.50x = 279,436 × 279,436
4. Step 4: Simplify right side
   130,018.50x = 78,084,478,096
5. Step 5: Solve for x
   x = 78,084,478,096/130,018.50
6. Step 6: Final answer
   x = 600,564.37