Finding the Third Proportional to 651,139.50 and 1,395,729

Step by Step Solution

1. Step 1: Write the proportion equation
   651,139.50 : 1,395,729 = 1,395,729 : x
2. Step 2: Convert to fraction form
   651,139.50/1,395,729 = 1,395,729/x
3. Step 3: Cross multiply
   651,139.50x = 1,395,729 × 1,395,729
4. Step 4: Simplify right side
   651,139.50x = 1,948,059,441,441
5. Step 5: Solve for x
   x = 1,948,059,441,441/651,139.50
6. Step 6: Final answer
   x = 2,991,769.72