Finding the Third Proportional to 28,926 and 63,390

Step by Step Solution

1. Step 1: Write the proportion equation
   28,926 : 63,390 = 63,390 : x
2. Step 2: Convert to fraction form
   28,926/63,390 = 63,390/x
3. Step 3: Cross multiply
   28,926x = 63,390 × 63,390
4. Step 4: Simplify right side
   28,926x = 4,018,292,100
5. Step 5: Solve for x
   x = 4,018,292,100/28,926
6. Step 6: Final answer
   x = 138,916.27