Finding the Third Proportional to 858,528 and 1,864,688

Step by Step Solution

1. Step 1: Write the proportion equation
   858,528 : 1,864,688 = 1,864,688 : x
2. Step 2: Convert to fraction form
   858,528/1,864,688 = 1,864,688/x
3. Step 3: Cross multiply
   858,528x = 1,864,688 × 1,864,688
4. Step 4: Simplify right side
   858,528x = 3,477,061,337,344
5. Step 5: Solve for x
   x = 3,477,061,337,344/858,528
6. Step 6: Final answer
   x = 4,050,026.72