Finding the Third Proportional to 123,484.50 and 266,206.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,484.50 : 266,206.50 = 266,206.50 : x
2. Step 2: Convert to fraction form
   123,484.50/266,206.50 = 266,206.50/x
3. Step 3: Cross multiply
   123,484.50x = 266,206.50 × 266,206.50
4. Step 4: Simplify right side
   123,484.50x = 70,865,900,642.25
5. Step 5: Solve for x
   x = 70,865,900,642.25/123,484.50
6. Step 6: Final answer
   x = 573,884.99