Finding the Third Proportional to 415,242 and 905,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   415,242 : 905,521.50 = 905,521.50 : x
2. Step 2: Convert to fraction form
   415,242/905,521.50 = 905,521.50/x
3. Step 3: Cross multiply
   415,242x = 905,521.50 × 905,521.50
4. Step 4: Simplify right side
   415,242x = 819,969,186,962.25
5. Step 5: Solve for x
   x = 819,969,186,962.25/415,242
6. Step 6: Final answer
   x = 1,974,677.87