Finding the Third Proportional to 640,479 and 982,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   640,479 : 982,426.50 = 982,426.50 : x
2. Step 2: Convert to fraction form
   640,479/982,426.50 = 982,426.50/x
3. Step 3: Cross multiply
   640,479x = 982,426.50 × 982,426.50
4. Step 4: Simplify right side
   640,479x = 965,161,827,902.25
5. Step 5: Solve for x
   x = 965,161,827,902.25/640,479
6. Step 6: Final answer
   x = 1,506,937.51