Finding the Third Proportional to 462,099 and 677,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   462,099 : 677,128.50 = 677,128.50 : x
2. Step 2: Convert to fraction form
   462,099/677,128.50 = 677,128.50/x
3. Step 3: Cross multiply
   462,099x = 677,128.50 × 677,128.50
4. Step 4: Simplify right side
   462,099x = 458,503,005,512.25
5. Step 5: Solve for x
   x = 458,503,005,512.25/462,099
6. Step 6: Final answer
   x = 992,218.13