Finding the Third Proportional to 353,134 and 772,288.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,134 : 772,288.50 = 772,288.50 : x
2. Step 2: Convert to fraction form
   353,134/772,288.50 = 772,288.50/x
3. Step 3: Cross multiply
   353,134x = 772,288.50 × 772,288.50
4. Step 4: Simplify right side
   353,134x = 596,429,527,232.25
5. Step 5: Solve for x
   x = 596,429,527,232.25/353,134
6. Step 6: Final answer
   x = 1,688,960.92