Finding the Third Proportional to 42,679.13 and 64,605.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,679.13 : 64,605.56 = 64,605.56 : x
2. Step 2: Convert to fraction form
   42,679.13/64,605.56 = 64,605.56/x
3. Step 3: Cross multiply
   42,679.13x = 64,605.56 × 64,605.56
4. Step 4: Simplify right side
   42,679.13x = 4,173,878,705.94
5. Step 5: Solve for x
   x = 4,173,878,705.94/42,679.13
6. Step 6: Final answer
   x = 97,796.73