Finding the Third Proportional to 42,030 and 64,143

Step by Step Solution

1. Step 1: Write the proportion equation
   42,030 : 64,143 = 64,143 : x
2. Step 2: Convert to fraction form
   42,030/64,143 = 64,143/x
3. Step 3: Cross multiply
   42,030x = 64,143 × 64,143
4. Step 4: Simplify right side
   42,030x = 4,114,324,449
5. Step 5: Solve for x
   x = 4,114,324,449/42,030
6. Step 6: Final answer
   x = 97,890.18