Finding the Third Proportional to 647,962 and 912,072

Step by Step Solution

1. Step 1: Write the proportion equation
   647,962 : 912,072 = 912,072 : x
2. Step 2: Convert to fraction form
   647,962/912,072 = 912,072/x
3. Step 3: Cross multiply
   647,962x = 912,072 × 912,072
4. Step 4: Simplify right side
   647,962x = 831,875,333,184
5. Step 5: Solve for x
   x = 831,875,333,184/647,962
6. Step 6: Final answer
   x = 1,283,833.52