Finding the Third Proportional to 314,787.38 and 687,200.06

Step by Step Solution

1. Step 1: Write the proportion equation
   314,787.38 : 687,200.06 = 687,200.06 : x
2. Step 2: Convert to fraction form
   314,787.38/687,200.06 = 687,200.06/x
3. Step 3: Cross multiply
   314,787.38x = 687,200.06 × 687,200.06
4. Step 4: Simplify right side
   314,787.38x = 472,243,925,900.00
5. Step 5: Solve for x
   x = 472,243,925,900.00/314,787.38
6. Step 6: Final answer
   x = 1,500,199.70