Finding the Third Proportional to 387,200.25 and 845,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   387,200.25 : 845,842.50 = 845,842.50 : x
2. Step 2: Convert to fraction form
   387,200.25/845,842.50 = 845,842.50/x
3. Step 3: Cross multiply
   387,200.25x = 845,842.50 × 845,842.50
4. Step 4: Simplify right side
   387,200.25x = 715,449,534,806.25
5. Step 5: Solve for x
   x = 715,449,534,806.25/387,200.25
6. Step 6: Final answer
   x = 1,847,750.70