Finding the Third Proportional to 129,364.50 and 282,776

Step by Step Solution

1. Step 1: Write the proportion equation
   129,364.50 : 282,776 = 282,776 : x
2. Step 2: Convert to fraction form
   129,364.50/282,776 = 282,776/x
3. Step 3: Cross multiply
   129,364.50x = 282,776 × 282,776
4. Step 4: Simplify right side
   129,364.50x = 79,962,266,176
5. Step 5: Solve for x
   x = 79,962,266,176/129,364.50
6. Step 6: Final answer
   x = 618,115.99