Finding the Third Proportional to 364,128.75 and 807,840

Step by Step Solution

1. Step 1: Write the proportion equation
   364,128.75 : 807,840 = 807,840 : x
2. Step 2: Convert to fraction form
   364,128.75/807,840 = 807,840/x
3. Step 3: Cross multiply
   364,128.75x = 807,840 × 807,840
4. Step 4: Simplify right side
   364,128.75x = 652,605,465,600
5. Step 5: Solve for x
   x = 652,605,465,600/364,128.75
6. Step 6: Final answer
   x = 1,792,238.23