Finding the Third Proportional to 42,271.88 and 64,997.44

Step by Step Solution

1. Step 1: Write the proportion equation
   42,271.88 : 64,997.44 = 64,997.44 : x
2. Step 2: Convert to fraction form
   42,271.88/64,997.44 = 64,997.44/x
3. Step 3: Cross multiply
   42,271.88x = 64,997.44 × 64,997.44
4. Step 4: Simplify right side
   42,271.88x = 4,224,666,881.57
5. Step 5: Solve for x
   x = 4,224,666,881.57/42,271.88
6. Step 6: Final answer
   x = 99,940.37