Finding the Third Proportional to 856,564 and 1,865,672

Step by Step Solution

1. Step 1: Write the proportion equation
   856,564 : 1,865,672 = 1,865,672 : x
2. Step 2: Convert to fraction form
   856,564/1,865,672 = 1,865,672/x
3. Step 3: Cross multiply
   856,564x = 1,865,672 × 1,865,672
4. Step 4: Simplify right side
   856,564x = 3,480,732,011,584
5. Step 5: Solve for x
   x = 3,480,732,011,584/856,564
6. Step 6: Final answer
   x = 4,063,598.30