Finding the Third Proportional to 454,209 and 985,689.75

Step by Step Solution

1. Step 1: Write the proportion equation
   454,209 : 985,689.75 = 985,689.75 : x
2. Step 2: Convert to fraction form
   454,209/985,689.75 = 985,689.75/x
3. Step 3: Cross multiply
   454,209x = 985,689.75 × 985,689.75
4. Step 4: Simplify right side
   454,209x = 971,584,283,255.06
5. Step 5: Solve for x
   x = 971,584,283,255.06/454,209
6. Step 6: Final answer
   x = 2,139,068.76