Finding the Third Proportional to 69,149 and 140,836.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,149 : 140,836.50 = 140,836.50 : x
2. Step 2: Convert to fraction form
   69,149/140,836.50 = 140,836.50/x
3. Step 3: Cross multiply
   69,149x = 140,836.50 × 140,836.50
4. Step 4: Simplify right side
   69,149x = 19,834,919,732.25
5. Step 5: Solve for x
   x = 19,834,919,732.25/69,149
6. Step 6: Final answer
   x = 286,843.19