Finding the Third Proportional to 128,792 and 197,011.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,792 : 197,011.50 = 197,011.50 : x
2. Step 2: Convert to fraction form
   128,792/197,011.50 = 197,011.50/x
3. Step 3: Cross multiply
   128,792x = 197,011.50 × 197,011.50
4. Step 4: Simplify right side
   128,792x = 38,813,531,132.25
5. Step 5: Solve for x
   x = 38,813,531,132.25/128,792
6. Step 6: Final answer
   x = 301,366.01