Finding the Third Proportional to 69,619.50 and 97,731.56

Step by Step Solution

1. Step 1: Write the proportion equation
   69,619.50 : 97,731.56 = 97,731.56 : x
2. Step 2: Convert to fraction form
   69,619.50/97,731.56 = 97,731.56/x
3. Step 3: Cross multiply
   69,619.50x = 97,731.56 × 97,731.56
4. Step 4: Simplify right side
   69,619.50x = 9,551,458,308.69
5. Step 5: Solve for x
   x = 9,551,458,308.69/69,619.50
6. Step 6: Final answer
   x = 137,195.16