Finding the Third Proportional to 606,257 and 905,641.50

Step by Step Solution

1. Step 1: Write the proportion equation
   606,257 : 905,641.50 = 905,641.50 : x
2. Step 2: Convert to fraction form
   606,257/905,641.50 = 905,641.50/x
3. Step 3: Cross multiply
   606,257x = 905,641.50 × 905,641.50
4. Step 4: Simplify right side
   606,257x = 820,186,526,522.25
5. Step 5: Solve for x
   x = 820,186,526,522.25/606,257
6. Step 6: Final answer
   x = 1,352,869.37