Finding the Third Proportional to 78,499.13 and 171,927.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,499.13 : 171,927.56 = 171,927.56 : x
2. Step 2: Convert to fraction form
   78,499.13/171,927.56 = 171,927.56/x
3. Step 3: Cross multiply
   78,499.13x = 171,927.56 × 171,927.56
4. Step 4: Simplify right side
   78,499.13x = 29,559,086,747.19
5. Step 5: Solve for x
   x = 29,559,086,747.19/78,499.13
6. Step 6: Final answer
   x = 376,553.07