Finding the Third Proportional to 38,900 and 55,047

Step by Step Solution

1. Step 1: Write the proportion equation
   38,900 : 55,047 = 55,047 : x
2. Step 2: Convert to fraction form
   38,900/55,047 = 55,047/x
3. Step 3: Cross multiply
   38,900x = 55,047 × 55,047
4. Step 4: Simplify right side
   38,900x = 3,030,172,209
5. Step 5: Solve for x
   x = 3,030,172,209/38,900
6. Step 6: Final answer
   x = 77,896.46