Finding the Third Proportional to 13,888.97 and 30,780.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,888.97 : 30,780.32 = 30,780.32 : x
2. Step 2: Convert to fraction form
   13,888.97/30,780.32 = 30,780.32/x
3. Step 3: Cross multiply
   13,888.97x = 30,780.32 × 30,780.32
4. Step 4: Simplify right side
   13,888.97x = 947,427,878.07
5. Step 5: Solve for x
   x = 947,427,878.07/13,888.97
6. Step 6: Final answer
   x = 68,214.41