Finding the Third Proportional to 718,287 and 1,112,171

Step by Step Solution

1. Step 1: Write the proportion equation
   718,287 : 1,112,171 = 1,112,171 : x
2. Step 2: Convert to fraction form
   718,287/1,112,171 = 1,112,171/x
3. Step 3: Cross multiply
   718,287x = 1,112,171 × 1,112,171
4. Step 4: Simplify right side
   718,287x = 1,236,924,333,241
5. Step 5: Solve for x
   x = 1,236,924,333,241/718,287
6. Step 6: Final answer
   x = 1,722,047.50