Finding the Third Proportional to 312,904.50 and 672,981

Step by Step Solution

1. Step 1: Write the proportion equation
   312,904.50 : 672,981 = 672,981 : x
2. Step 2: Convert to fraction form
   312,904.50/672,981 = 672,981/x
3. Step 3: Cross multiply
   312,904.50x = 672,981 × 672,981
4. Step 4: Simplify right side
   312,904.50x = 452,903,426,361
5. Step 5: Solve for x
   x = 452,903,426,361/312,904.50
6. Step 6: Final answer
   x = 1,447,417.43