Finding the Third Proportional to 131,316 and 191,231.25

Step by Step Solution

1. Step 1: Write the proportion equation
   131,316 : 191,231.25 = 191,231.25 : x
2. Step 2: Convert to fraction form
   131,316/191,231.25 = 191,231.25/x
3. Step 3: Cross multiply
   131,316x = 191,231.25 × 191,231.25
4. Step 4: Simplify right side
   131,316x = 36,569,390,976.56
5. Step 5: Solve for x
   x = 36,569,390,976.56/131,316
6. Step 6: Final answer
   x = 278,483.89