Finding the Third Proportional to 12,818.25 and 29,858.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,818.25 : 29,858.63 = 29,858.63 : x
2. Step 2: Convert to fraction form
   12,818.25/29,858.63 = 29,858.63/x
3. Step 3: Cross multiply
   12,818.25x = 29,858.63 × 29,858.63
4. Step 4: Simplify right side
   12,818.25x = 891,537,486.89
5. Step 5: Solve for x
   x = 891,537,486.89/12,818.25
6. Step 6: Final answer
   x = 69,552.20