Finding the Third Proportional to 858,118.50 and 1,165,428

Step by Step Solution

1. Step 1: Write the proportion equation
   858,118.50 : 1,165,428 = 1,165,428 : x
2. Step 2: Convert to fraction form
   858,118.50/1,165,428 = 1,165,428/x
3. Step 3: Cross multiply
   858,118.50x = 1,165,428 × 1,165,428
4. Step 4: Simplify right side
   858,118.50x = 1,358,222,423,184
5. Step 5: Solve for x
   x = 1,358,222,423,184/858,118.50
6. Step 6: Final answer
   x = 1,582,791.21