Finding the Third Proportional to 21,124.50 and 42,832.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,124.50 : 42,832.50 = 42,832.50 : x
2. Step 2: Convert to fraction form
   21,124.50/42,832.50 = 42,832.50/x
3. Step 3: Cross multiply
   21,124.50x = 42,832.50 × 42,832.50
4. Step 4: Simplify right side
   21,124.50x = 1,834,623,056.25
5. Step 5: Solve for x
   x = 1,834,623,056.25/21,124.50
6. Step 6: Final answer
   x = 86,848.12