Finding the Third Proportional to 434,478.50 and 908,681

Step by Step Solution

1. Step 1: Write the proportion equation
   434,478.50 : 908,681 = 908,681 : x
2. Step 2: Convert to fraction form
   434,478.50/908,681 = 908,681/x
3. Step 3: Cross multiply
   434,478.50x = 908,681 × 908,681
4. Step 4: Simplify right side
   434,478.50x = 825,701,159,761
5. Step 5: Solve for x
   x = 825,701,159,761/434,478.50
6. Step 6: Final answer
   x = 1,900,441.93