Finding the Third Proportional to 1,139.91 and 2,492.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.91 : 2,492.72 = 2,492.72 : x
2. Step 2: Convert to fraction form
   1,139.91/2,492.72 = 2,492.72/x
3. Step 3: Cross multiply
   1,139.91x = 2,492.72 × 2,492.72
4. Step 4: Simplify right side
   1,139.91x = 6,213,646.77
5. Step 5: Solve for x
   x = 6,213,646.77/1,139.91
6. Step 6: Final answer
   x = 5,451.02