Finding the Third Proportional to 78,858.14 and 172,983.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,858.14 : 172,983.52 = 172,983.52 : x
2. Step 2: Convert to fraction form
   78,858.14/172,983.52 = 172,983.52/x
3. Step 3: Cross multiply
   78,858.14x = 172,983.52 × 172,983.52
4. Step 4: Simplify right side
   78,858.14x = 29,923,296,677.98
5. Step 5: Solve for x
   x = 29,923,296,677.98/78,858.14
6. Step 6: Final answer
   x = 379,457.29