Finding the Third Proportional to 15,490 and 32,978

Step by Step Solution

1. Step 1: Write the proportion equation
   15,490 : 32,978 = 32,978 : x
2. Step 2: Convert to fraction form
   15,490/32,978 = 32,978/x
3. Step 3: Cross multiply
   15,490x = 32,978 × 32,978
4. Step 4: Simplify right side
   15,490x = 1,087,548,484
5. Step 5: Solve for x
   x = 1,087,548,484/15,490
6. Step 6: Final answer
   x = 70,209.71