Finding the Third Proportional to 858,635 and 1,359,300

Step by Step Solution

1. Step 1: Write the proportion equation
   858,635 : 1,359,300 = 1,359,300 : x
2. Step 2: Convert to fraction form
   858,635/1,359,300 = 1,359,300/x
3. Step 3: Cross multiply
   858,635x = 1,359,300 × 1,359,300
4. Step 4: Simplify right side
   858,635x = 1,847,696,490,000
5. Step 5: Solve for x
   x = 1,847,696,490,000/858,635
6. Step 6: Final answer
   x = 2,151,899.81