Finding the Third Proportional to 908.86 and 1,970.72

Step by Step Solution

1. Step 1: Write the proportion equation
   908.86 : 1,970.72 = 1,970.72 : x
2. Step 2: Convert to fraction form
   908.86/1,970.72 = 1,970.72/x
3. Step 3: Cross multiply
   908.86x = 1,970.72 × 1,970.72
4. Step 4: Simplify right side
   908.86x = 3,883,732.39
5. Step 5: Solve for x
   x = 3,883,732.39/908.86
6. Step 6: Final answer
   x = 4,273.19