Finding the Third Proportional to 71,839.13 and 105,670.69

Step by Step Solution

1. Step 1: Write the proportion equation
   71,839.13 : 105,670.69 = 105,670.69 : x
2. Step 2: Convert to fraction form
   71,839.13/105,670.69 = 105,670.69/x
3. Step 3: Cross multiply
   71,839.13x = 105,670.69 × 105,670.69
4. Step 4: Simplify right side
   71,839.13x = 11,166,294,196.72
5. Step 5: Solve for x
   x = 11,166,294,196.72/71,839.13
6. Step 6: Final answer
   x = 155,434.72