Finding the Third Proportional to 375,429.50 and 777,474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   375,429.50 : 777,474.50 = 777,474.50 : x
2. Step 2: Convert to fraction form
   375,429.50/777,474.50 = 777,474.50/x
3. Step 3: Cross multiply
   375,429.50x = 777,474.50 × 777,474.50
4. Step 4: Simplify right side
   375,429.50x = 604,466,598,150.25
5. Step 5: Solve for x
   x = 604,466,598,150.25/375,429.50
6. Step 6: Final answer
   x = 1,610,066.87