Finding the Third Proportional to 445,392 and 912,648

Step by Step Solution

1. Step 1: Write the proportion equation
   445,392 : 912,648 = 912,648 : x
2. Step 2: Convert to fraction form
   445,392/912,648 = 912,648/x
3. Step 3: Cross multiply
   445,392x = 912,648 × 912,648
4. Step 4: Simplify right side
   445,392x = 832,926,371,904
5. Step 5: Solve for x
   x = 832,926,371,904/445,392
6. Step 6: Final answer
   x = 1,870,097.29