Finding the Third Proportional to 42,760 and 64,900

Step by Step Solution

1. Step 1: Write the proportion equation
   42,760 : 64,900 = 64,900 : x
2. Step 2: Convert to fraction form
   42,760/64,900 = 64,900/x
3. Step 3: Cross multiply
   42,760x = 64,900 × 64,900
4. Step 4: Simplify right side
   42,760x = 4,212,010,000
5. Step 5: Solve for x
   x = 4,212,010,000/42,760
6. Step 6: Final answer
   x = 98,503.51