Finding the Third Proportional to 353,063.81 and 772,147.69

Step by Step Solution

1. Step 1: Write the proportion equation
   353,063.81 : 772,147.69 = 772,147.69 : x
2. Step 2: Convert to fraction form
   353,063.81/772,147.69 = 772,147.69/x
3. Step 3: Cross multiply
   353,063.81x = 772,147.69 × 772,147.69
4. Step 4: Simplify right side
   353,063.81x = 596,212,051,311.60
5. Step 5: Solve for x
   x = 596,212,051,311.60/353,063.81
6. Step 6: Final answer
   x = 1,688,680.71