Finding the Third Proportional to 78,261 and 116,931

Step by Step Solution

1. Step 1: Write the proportion equation
   78,261 : 116,931 = 116,931 : x
2. Step 2: Convert to fraction form
   78,261/116,931 = 116,931/x
3. Step 3: Cross multiply
   78,261x = 116,931 × 116,931
4. Step 4: Simplify right side
   78,261x = 13,672,858,761
5. Step 5: Solve for x
   x = 13,672,858,761/78,261
6. Step 6: Final answer
   x = 174,708.46