Finding the Third Proportional to 858,429 and 1,812,534

Step by Step Solution

1. Step 1: Write the proportion equation
   858,429 : 1,812,534 = 1,812,534 : x
2. Step 2: Convert to fraction form
   858,429/1,812,534 = 1,812,534/x
3. Step 3: Cross multiply
   858,429x = 1,812,534 × 1,812,534
4. Step 4: Simplify right side
   858,429x = 3,285,279,501,156
5. Step 5: Solve for x
   x = 3,285,279,501,156/858,429
6. Step 6: Final answer
   x = 3,827,083.55