Finding the Third Proportional to 643,184 and 945,507

Step by Step Solution

1. Step 1: Write the proportion equation
   643,184 : 945,507 = 945,507 : x
2. Step 2: Convert to fraction form
   643,184/945,507 = 945,507/x
3. Step 3: Cross multiply
   643,184x = 945,507 × 945,507
4. Step 4: Simplify right side
   643,184x = 893,983,487,049
5. Step 5: Solve for x
   x = 893,983,487,049/643,184
6. Step 6: Final answer
   x = 1,389,934.28