Finding the Third Proportional to 30,709.13 and 70,834.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,709.13 : 70,834.50 = 70,834.50 : x
2. Step 2: Convert to fraction form
   30,709.13/70,834.50 = 70,834.50/x
3. Step 3: Cross multiply
   30,709.13x = 70,834.50 × 70,834.50
4. Step 4: Simplify right side
   30,709.13x = 5,017,526,390.25
5. Step 5: Solve for x
   x = 5,017,526,390.25/30,709.13
6. Step 6: Final answer
   x = 163,388.78