Finding the Third Proportional to 50,071.50 and 70,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,071.50 : 70,429.50 = 70,429.50 : x
2. Step 2: Convert to fraction form
   50,071.50/70,429.50 = 70,429.50/x
3. Step 3: Cross multiply
   50,071.50x = 70,429.50 × 70,429.50
4. Step 4: Simplify right side
   50,071.50x = 4,960,314,470.25
5. Step 5: Solve for x
   x = 4,960,314,470.25/50,071.50
6. Step 6: Final answer
   x = 99,064.63