Finding the Third Proportional to 314,104.50 and 686,875.50

Step by Step Solution

1. Step 1: Write the proportion equation
   314,104.50 : 686,875.50 = 686,875.50 : x
2. Step 2: Convert to fraction form
   314,104.50/686,875.50 = 686,875.50/x
3. Step 3: Cross multiply
   314,104.50x = 686,875.50 × 686,875.50
4. Step 4: Simplify right side
   314,104.50x = 471,797,952,500.25
5. Step 5: Solve for x
   x = 471,797,952,500.25/314,104.50
6. Step 6: Final answer
   x = 1,502,041.37