Finding the Third Proportional to 445,068 and 921,240

Step by Step Solution

1. Step 1: Write the proportion equation
   445,068 : 921,240 = 921,240 : x
2. Step 2: Convert to fraction form
   445,068/921,240 = 921,240/x
3. Step 3: Cross multiply
   445,068x = 921,240 × 921,240
4. Step 4: Simplify right side
   445,068x = 848,683,137,600
5. Step 5: Solve for x
   x = 848,683,137,600/445,068
6. Step 6: Final answer
   x = 1,906,861.73