Finding the Third Proportional to 38,142.56 and 79,770.56

Step by Step Solution

1. Step 1: Write the proportion equation
   38,142.56 : 79,770.56 = 79,770.56 : x
2. Step 2: Convert to fraction form
   38,142.56/79,770.56 = 79,770.56/x
3. Step 3: Cross multiply
   38,142.56x = 79,770.56 × 79,770.56
4. Step 4: Simplify right side
   38,142.56x = 6,363,342,641.57
5. Step 5: Solve for x
   x = 6,363,342,641.57/38,142.56
6. Step 6: Final answer
   x = 166,830.50