Finding the Third Proportional to 130,487.50 and 278,066

Step by Step Solution

1. Step 1: Write the proportion equation
   130,487.50 : 278,066 = 278,066 : x
2. Step 2: Convert to fraction form
   130,487.50/278,066 = 278,066/x
3. Step 3: Cross multiply
   130,487.50x = 278,066 × 278,066
4. Step 4: Simplify right side
   130,487.50x = 77,320,700,356
5. Step 5: Solve for x
   x = 77,320,700,356/130,487.50
6. Step 6: Final answer
   x = 592,552.55