Finding the Third Proportional to 646,242 and 1,073,315

Step by Step Solution

1. Step 1: Write the proportion equation
   646,242 : 1,073,315 = 1,073,315 : x
2. Step 2: Convert to fraction form
   646,242/1,073,315 = 1,073,315/x
3. Step 3: Cross multiply
   646,242x = 1,073,315 × 1,073,315
4. Step 4: Simplify right side
   646,242x = 1,152,005,089,225
5. Step 5: Solve for x
   x = 1,152,005,089,225/646,242
6. Step 6: Final answer
   x = 1,782,621.82