Finding the Third Proportional to 70,379.25 and 109,140

Step by Step Solution

1. Step 1: Write the proportion equation
   70,379.25 : 109,140 = 109,140 : x
2. Step 2: Convert to fraction form
   70,379.25/109,140 = 109,140/x
3. Step 3: Cross multiply
   70,379.25x = 109,140 × 109,140
4. Step 4: Simplify right side
   70,379.25x = 11,911,539,600
5. Step 5: Solve for x
   x = 11,911,539,600/70,379.25
6. Step 6: Final answer
   x = 169,247.89