Finding the Third Proportional to 423,328.50 and 905,575.50

Step by Step Solution

1. Step 1: Write the proportion equation
   423,328.50 : 905,575.50 = 905,575.50 : x
2. Step 2: Convert to fraction form
   423,328.50/905,575.50 = 905,575.50/x
3. Step 3: Cross multiply
   423,328.50x = 905,575.50 × 905,575.50
4. Step 4: Simplify right side
   423,328.50x = 820,066,986,200.25
5. Step 5: Solve for x
   x = 820,066,986,200.25/423,328.50
6. Step 6: Final answer
   x = 1,937,188.23