Finding the Third Proportional to 40,635 and 64,889

Step by Step Solution

1. Step 1: Write the proportion equation
   40,635 : 64,889 = 64,889 : x
2. Step 2: Convert to fraction form
   40,635/64,889 = 64,889/x
3. Step 3: Cross multiply
   40,635x = 64,889 × 64,889
4. Step 4: Simplify right side
   40,635x = 4,210,582,321
5. Step 5: Solve for x
   x = 4,210,582,321/40,635
6. Step 6: Final answer
   x = 103,619.60