Finding the Third Proportional to 407,280 and 872,928

Step by Step Solution

1. Step 1: Write the proportion equation
   407,280 : 872,928 = 872,928 : x
2. Step 2: Convert to fraction form
   407,280/872,928 = 872,928/x
3. Step 3: Cross multiply
   407,280x = 872,928 × 872,928
4. Step 4: Simplify right side
   407,280x = 762,003,293,184
5. Step 5: Solve for x
   x = 762,003,293,184/407,280
6. Step 6: Final answer
   x = 1,870,956.82