Finding the Third Proportional to 130,530.50 and 286,279

Step by Step Solution

1. Step 1: Write the proportion equation
   130,530.50 : 286,279 = 286,279 : x
2. Step 2: Convert to fraction form
   130,530.50/286,279 = 286,279/x
3. Step 3: Cross multiply
   130,530.50x = 286,279 × 286,279
4. Step 4: Simplify right side
   130,530.50x = 81,955,665,841
5. Step 5: Solve for x
   x = 81,955,665,841/130,530.50
6. Step 6: Final answer
   x = 627,866.02