Finding the Third Proportional to 728,127 and 1,139,746.50

Step by Step Solution

1. Step 1: Write the proportion equation
   728,127 : 1,139,746.50 = 1,139,746.50 : x
2. Step 2: Convert to fraction form
   728,127/1,139,746.50 = 1,139,746.50/x
3. Step 3: Cross multiply
   728,127x = 1,139,746.50 × 1,139,746.50
4. Step 4: Simplify right side
   728,127x = 1,299,022,084,262.25
5. Step 5: Solve for x
   x = 1,299,022,084,262.25/728,127
6. Step 6: Final answer
   x = 1,784,059.76