Finding the Third Proportional to 209,664 and 452,799.56

Step by Step Solution

1. Step 1: Write the proportion equation
   209,664 : 452,799.56 = 452,799.56 : x
2. Step 2: Convert to fraction form
   209,664/452,799.56 = 452,799.56/x
3. Step 3: Cross multiply
   209,664x = 452,799.56 × 452,799.56
4. Step 4: Simplify right side
   209,664x = 205,027,443,800.19
5. Step 5: Solve for x
   x = 205,027,443,800.19/209,664
6. Step 6: Final answer
   x = 977,885.78