Finding the Third Proportional to 130,492.50 and 278,065.50

Step by Step Solution

1. Step 1: Write the proportion equation
   130,492.50 : 278,065.50 = 278,065.50 : x
2. Step 2: Convert to fraction form
   130,492.50/278,065.50 = 278,065.50/x
3. Step 3: Cross multiply
   130,492.50x = 278,065.50 × 278,065.50
4. Step 4: Simplify right side
   130,492.50x = 77,320,422,290.25
5. Step 5: Solve for x
   x = 77,320,422,290.25/130,492.50
6. Step 6: Final answer
   x = 592,527.71