Finding the Third Proportional to 445,439.25 and 971,280

Step by Step Solution

1. Step 1: Write the proportion equation
   445,439.25 : 971,280 = 971,280 : x
2. Step 2: Convert to fraction form
   445,439.25/971,280 = 971,280/x
3. Step 3: Cross multiply
   445,439.25x = 971,280 × 971,280
4. Step 4: Simplify right side
   445,439.25x = 943,384,838,400
5. Step 5: Solve for x
   x = 943,384,838,400/445,439.25
6. Step 6: Final answer
   x = 2,117,875.42