Finding the Third Proportional to 47,428.50 and 63,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   47,428.50 : 63,440.50 = 63,440.50 : x
2. Step 2: Convert to fraction form
   47,428.50/63,440.50 = 63,440.50/x
3. Step 3: Cross multiply
   47,428.50x = 63,440.50 × 63,440.50
4. Step 4: Simplify right side
   47,428.50x = 4,024,697,040.25
5. Step 5: Solve for x
   x = 4,024,697,040.25/47,428.50
6. Step 6: Final answer
   x = 84,858.20