Finding the Third Proportional to 453,016.55 and 634,981.78

Step by Step Solution

1. Step 1: Write the proportion equation
   453,016.55 : 634,981.78 = 634,981.78 : x
2. Step 2: Convert to fraction form
   453,016.55/634,981.78 = 634,981.78/x
3. Step 3: Cross multiply
   453,016.55x = 634,981.78 × 634,981.78
4. Step 4: Simplify right side
   453,016.55x = 403,201,862,519.42
5. Step 5: Solve for x
   x = 403,201,862,519.42/453,016.55
6. Step 6: Final answer
   x = 890,037.83