Finding the Third Proportional to 21,915.56 and 47,779.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,915.56 : 47,779.88 = 47,779.88 : x
2. Step 2: Convert to fraction form
   21,915.56/47,779.88 = 47,779.88/x
3. Step 3: Cross multiply
   21,915.56x = 47,779.88 × 47,779.88
4. Step 4: Simplify right side
   21,915.56x = 2,282,916,455.02
5. Step 5: Solve for x
   x = 2,282,916,455.02/21,915.56
6. Step 6: Final answer
   x = 104,168.74