Finding the Third Proportional to 788,400 and 1,729,402.50

Step by Step Solution

1. Step 1: Write the proportion equation
   788,400 : 1,729,402.50 = 1,729,402.50 : x
2. Step 2: Convert to fraction form
   788,400/1,729,402.50 = 1,729,402.50/x
3. Step 3: Cross multiply
   788,400x = 1,729,402.50 × 1,729,402.50
4. Step 4: Simplify right side
   788,400x = 2,990,833,007,006.25
5. Step 5: Solve for x
   x = 2,990,833,007,006.25/788,400
6. Step 6: Final answer
   x = 3,793,547.70