Finding the Third Proportional to 72,307.69 and 156,643.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72,307.69 : 156,643.88 = 156,643.88 : x
2. Step 2: Convert to fraction form
   72,307.69/156,643.88 = 156,643.88/x
3. Step 3: Cross multiply
   72,307.69x = 156,643.88 × 156,643.88
4. Step 4: Simplify right side
   72,307.69x = 24,537,303,575.02
5. Step 5: Solve for x
   x = 24,537,303,575.02/72,307.69
6. Step 6: Final answer
   x = 339,345.71