Finding the Third Proportional to 138,156.89 and 302,614.73

Step by Step Solution

1. Step 1: Write the proportion equation
   138,156.89 : 302,614.73 = 302,614.73 : x
2. Step 2: Convert to fraction form
   138,156.89/302,614.73 = 302,614.73/x
3. Step 3: Cross multiply
   138,156.89x = 302,614.73 × 302,614.73
4. Step 4: Simplify right side
   138,156.89x = 91,575,677,460.85
5. Step 5: Solve for x
   x = 91,575,677,460.85/138,156.89
6. Step 6: Final answer
   x = 662,838.29