Finding the Third Proportional to 493,726.50 and 661,857

Step by Step Solution

1. Step 1: Write the proportion equation
   493,726.50 : 661,857 = 661,857 : x
2. Step 2: Convert to fraction form
   493,726.50/661,857 = 661,857/x
3. Step 3: Cross multiply
   493,726.50x = 661,857 × 661,857
4. Step 4: Simplify right side
   493,726.50x = 438,054,688,449
5. Step 5: Solve for x
   x = 438,054,688,449/493,726.50
6. Step 6: Final answer
   x = 887,241.60