Finding the Third Proportional to 417,109.50 and 910,723.50

Step by Step Solution

1. Step 1: Write the proportion equation
   417,109.50 : 910,723.50 = 910,723.50 : x
2. Step 2: Convert to fraction form
   417,109.50/910,723.50 = 910,723.50/x
3. Step 3: Cross multiply
   417,109.50x = 910,723.50 × 910,723.50
4. Step 4: Simplify right side
   417,109.50x = 829,417,293,452.25
5. Step 5: Solve for x
   x = 829,417,293,452.25/417,109.50
6. Step 6: Final answer
   x = 1,988,488.14