Finding the Third Proportional to 38,780 and 58,156

Step by Step Solution

1. Step 1: Write the proportion equation
   38,780 : 58,156 = 58,156 : x
2. Step 2: Convert to fraction form
   38,780/58,156 = 58,156/x
3. Step 3: Cross multiply
   38,780x = 58,156 × 58,156
4. Step 4: Simplify right side
   38,780x = 3,382,120,336
5. Step 5: Solve for x
   x = 3,382,120,336/38,780
6. Step 6: Final answer
   x = 87,213.01