Finding the Third Proportional to 728,106.38 and 1,139,684.06

Step by Step Solution

1. Step 1: Write the proportion equation
   728,106.38 : 1,139,684.06 = 1,139,684.06 : x
2. Step 2: Convert to fraction form
   728,106.38/1,139,684.06 = 1,139,684.06/x
3. Step 3: Cross multiply
   728,106.38x = 1,139,684.06 × 1,139,684.06
4. Step 4: Simplify right side
   728,106.38x = 1,298,879,762,316.50
5. Step 5: Solve for x
   x = 1,298,879,762,316.50/728,106.38
6. Step 6: Final answer
   x = 1,783,914.83