Finding the Third Proportional to 780,123 and 1,165,036.50

Step by Step Solution

1. Step 1: Write the proportion equation
   780,123 : 1,165,036.50 = 1,165,036.50 : x
2. Step 2: Convert to fraction form
   780,123/1,165,036.50 = 1,165,036.50/x
3. Step 3: Cross multiply
   780,123x = 1,165,036.50 × 1,165,036.50
4. Step 4: Simplify right side
   780,123x = 1,357,310,046,332.25
5. Step 5: Solve for x
   x = 1,357,310,046,332.25/780,123
6. Step 6: Final answer
   x = 1,739,866.72