Finding the Third Proportional to 299,772 and 627,250.50

Step by Step Solution

1. Step 1: Write the proportion equation
   299,772 : 627,250.50 = 627,250.50 : x
2. Step 2: Convert to fraction form
   299,772/627,250.50 = 627,250.50/x
3. Step 3: Cross multiply
   299,772x = 627,250.50 × 627,250.50
4. Step 4: Simplify right side
   299,772x = 393,443,189,750.25
5. Step 5: Solve for x
   x = 393,443,189,750.25/299,772
6. Step 6: Final answer
   x = 1,312,474.78