Finding the Third Proportional to 136,048.50 and 317,691

Step by Step Solution

1. Step 1: Write the proportion equation
   136,048.50 : 317,691 = 317,691 : x
2. Step 2: Convert to fraction form
   136,048.50/317,691 = 317,691/x
3. Step 3: Cross multiply
   136,048.50x = 317,691 × 317,691
4. Step 4: Simplify right side
   136,048.50x = 100,927,571,481
5. Step 5: Solve for x
   x = 100,927,571,481/136,048.50
6. Step 6: Final answer
   x = 741,849.94