Finding the Third Proportional to 78,693.56 and 118,636.21

Step by Step Solution

1. Step 1: Write the proportion equation
   78,693.56 : 118,636.21 = 118,636.21 : x
2. Step 2: Convert to fraction form
   78,693.56/118,636.21 = 118,636.21/x
3. Step 3: Cross multiply
   78,693.56x = 118,636.21 × 118,636.21
4. Step 4: Simplify right side
   78,693.56x = 14,074,549,618.76
5. Step 5: Solve for x
   x = 14,074,549,618.76/78,693.56
6. Step 6: Final answer
   x = 178,852.63