Finding the Third Proportional to 91,059.50 and 137,859

Step by Step Solution

1. Step 1: Write the proportion equation
   91,059.50 : 137,859 = 137,859 : x
2. Step 2: Convert to fraction form
   91,059.50/137,859 = 137,859/x
3. Step 3: Cross multiply
   91,059.50x = 137,859 × 137,859
4. Step 4: Simplify right side
   91,059.50x = 19,005,103,881
5. Step 5: Solve for x
   x = 19,005,103,881/91,059.50
6. Step 6: Final answer
   x = 208,710.83