Finding the Third Proportional to 65,156.63 and 142,770.38

Step by Step Solution

1. Step 1: Write the proportion equation
   65,156.63 : 142,770.38 = 142,770.38 : x
2. Step 2: Convert to fraction form
   65,156.63/142,770.38 = 142,770.38/x
3. Step 3: Cross multiply
   65,156.63x = 142,770.38 × 142,770.38
4. Step 4: Simplify right side
   65,156.63x = 20,383,379,977.64
5. Step 5: Solve for x
   x = 20,383,379,977.64/65,156.63
6. Step 6: Final answer
   x = 312,836.65