Finding the Third Proportional to 140,916 and 248,358

Step by Step Solution

1. Step 1: Write the proportion equation
   140,916 : 248,358 = 248,358 : x
2. Step 2: Convert to fraction form
   140,916/248,358 = 248,358/x
3. Step 3: Cross multiply
   140,916x = 248,358 × 248,358
4. Step 4: Simplify right side
   140,916x = 61,681,696,164
5. Step 5: Solve for x
   x = 61,681,696,164/140,916
6. Step 6: Final answer
   x = 437,719.61