Finding the Third Proportional to 647,958 and 912,066

Step by Step Solution

1. Step 1: Write the proportion equation
   647,958 : 912,066 = 912,066 : x
2. Step 2: Convert to fraction form
   647,958/912,066 = 912,066/x
3. Step 3: Cross multiply
   647,958x = 912,066 × 912,066
4. Step 4: Simplify right side
   647,958x = 831,864,388,356
5. Step 5: Solve for x
   x = 831,864,388,356/647,958
6. Step 6: Final answer
   x = 1,283,824.55