Finding the Third Proportional to 77,929.50 and 170,438

Step by Step Solution

1. Step 1: Write the proportion equation
   77,929.50 : 170,438 = 170,438 : x
2. Step 2: Convert to fraction form
   77,929.50/170,438 = 170,438/x
3. Step 3: Cross multiply
   77,929.50x = 170,438 × 170,438
4. Step 4: Simplify right side
   77,929.50x = 29,049,111,844
5. Step 5: Solve for x
   x = 29,049,111,844/77,929.50
6. Step 6: Final answer
   x = 372,761.43