Finding the Third Proportional to 1,317.56 and 1,972.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.56 : 1,972.88 = 1,972.88 : x
2. Step 2: Convert to fraction form
   1,317.56/1,972.88 = 1,972.88/x
3. Step 3: Cross multiply
   1,317.56x = 1,972.88 × 1,972.88
4. Step 4: Simplify right side
   1,317.56x = 3,892,235.77
5. Step 5: Solve for x
   x = 3,892,235.77/1,317.56
6. Step 6: Final answer
   x = 2,954.12