Finding the Third Proportional to 842,784 and 1,784,688

Step by Step Solution

1. Step 1: Write the proportion equation
   842,784 : 1,784,688 = 1,784,688 : x
2. Step 2: Convert to fraction form
   842,784/1,784,688 = 1,784,688/x
3. Step 3: Cross multiply
   842,784x = 1,784,688 × 1,784,688
4. Step 4: Simplify right side
   842,784x = 3,185,111,257,344
5. Step 5: Solve for x
   x = 3,185,111,257,344/842,784
6. Step 6: Final answer
   x = 3,779,273.52