Finding the Third Proportional to 40,839.19 and 64,721.53

Step by Step Solution

1. Step 1: Write the proportion equation
   40,839.19 : 64,721.53 = 64,721.53 : x
2. Step 2: Convert to fraction form
   40,839.19/64,721.53 = 64,721.53/x
3. Step 3: Cross multiply
   40,839.19x = 64,721.53 × 64,721.53
4. Step 4: Simplify right side
   40,839.19x = 4,188,876,607.34
5. Step 5: Solve for x
   x = 4,188,876,607.34/40,839.19
6. Step 6: Final answer
   x = 102,570.03