Finding the Third Proportional to 646,572 and 1,403,736

Step by Step Solution

1. Step 1: Write the proportion equation
   646,572 : 1,403,736 = 1,403,736 : x
2. Step 2: Convert to fraction form
   646,572/1,403,736 = 1,403,736/x
3. Step 3: Cross multiply
   646,572x = 1,403,736 × 1,403,736
4. Step 4: Simplify right side
   646,572x = 1,970,474,757,696
5. Step 5: Solve for x
   x = 1,970,474,757,696/646,572
6. Step 6: Final answer
   x = 3,047,572.05