Finding the Third Proportional to 55,590 and 131,146

Step by Step Solution

1. Step 1: Write the proportion equation
   55,590 : 131,146 = 131,146 : x
2. Step 2: Convert to fraction form
   55,590/131,146 = 131,146/x
3. Step 3: Cross multiply
   55,590x = 131,146 × 131,146
4. Step 4: Simplify right side
   55,590x = 17,199,273,316
5. Step 5: Solve for x
   x = 17,199,273,316/55,590
6. Step 6: Final answer
   x = 309,395.09