Finding the Third Proportional to 611,553.50 and 899,355

Step by Step Solution

1. Step 1: Write the proportion equation
   611,553.50 : 899,355 = 899,355 : x
2. Step 2: Convert to fraction form
   611,553.50/899,355 = 899,355/x
3. Step 3: Cross multiply
   611,553.50x = 899,355 × 899,355
4. Step 4: Simplify right side
   611,553.50x = 808,839,416,025
5. Step 5: Solve for x
   x = 808,839,416,025/611,553.50
6. Step 6: Final answer
   x = 1,322,597.97