Finding the Third Proportional to 749,398 and 1,142,772.50

Step by Step Solution

1. Step 1: Write the proportion equation
   749,398 : 1,142,772.50 = 1,142,772.50 : x
2. Step 2: Convert to fraction form
   749,398/1,142,772.50 = 1,142,772.50/x
3. Step 3: Cross multiply
   749,398x = 1,142,772.50 × 1,142,772.50
4. Step 4: Simplify right side
   749,398x = 1,305,928,986,756.25
5. Step 5: Solve for x
   x = 1,305,928,986,756.25/749,398
6. Step 6: Final answer
   x = 1,742,637.41