Finding the Third Proportional to 130,042.50 and 279,484.50

Step by Step Solution

1. Step 1: Write the proportion equation
   130,042.50 : 279,484.50 = 279,484.50 : x
2. Step 2: Convert to fraction form
   130,042.50/279,484.50 = 279,484.50/x
3. Step 3: Cross multiply
   130,042.50x = 279,484.50 × 279,484.50
4. Step 4: Simplify right side
   130,042.50x = 78,111,585,740.25
5. Step 5: Solve for x
   x = 78,111,585,740.25/130,042.50
6. Step 6: Final answer
   x = 600,661.98