Finding the Third Proportional to 42,343 and 64,972.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,343 : 64,972.50 = 64,972.50 : x
2. Step 2: Convert to fraction form
   42,343/64,972.50 = 64,972.50/x
3. Step 3: Cross multiply
   42,343x = 64,972.50 × 64,972.50
4. Step 4: Simplify right side
   42,343x = 4,221,425,756.25
5. Step 5: Solve for x
   x = 4,221,425,756.25/42,343
6. Step 6: Final answer
   x = 99,695.95