Finding the Third Proportional to 455,863.50 and 991,998

Step by Step Solution

1. Step 1: Write the proportion equation
   455,863.50 : 991,998 = 991,998 : x
2. Step 2: Convert to fraction form
   455,863.50/991,998 = 991,998/x
3. Step 3: Cross multiply
   455,863.50x = 991,998 × 991,998
4. Step 4: Simplify right side
   455,863.50x = 984,060,032,004
5. Step 5: Solve for x
   x = 984,060,032,004/455,863.50
6. Step 6: Final answer
   x = 2,158,672.57