Finding the Third Proportional to 423,376.50 and 905,019

Step by Step Solution

1. Step 1: Write the proportion equation
   423,376.50 : 905,019 = 905,019 : x
2. Step 2: Convert to fraction form
   423,376.50/905,019 = 905,019/x
3. Step 3: Cross multiply
   423,376.50x = 905,019 × 905,019
4. Step 4: Simplify right side
   423,376.50x = 819,059,390,361
5. Step 5: Solve for x
   x = 819,059,390,361/423,376.50
6. Step 6: Final answer
   x = 1,934,588.69