Finding the Third Proportional to 21,120 and 46,432.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,120 : 46,432.50 = 46,432.50 : x
2. Step 2: Convert to fraction form
   21,120/46,432.50 = 46,432.50/x
3. Step 3: Cross multiply
   21,120x = 46,432.50 × 46,432.50
4. Step 4: Simplify right side
   21,120x = 2,155,977,056.25
5. Step 5: Solve for x
   x = 2,155,977,056.25/21,120
6. Step 6: Final answer
   x = 102,082.25