Finding the Third Proportional to 353,136 and 772,292.25

Step by Step Solution

1. Step 1: Write the proportion equation
   353,136 : 772,292.25 = 772,292.25 : x
2. Step 2: Convert to fraction form
   353,136/772,292.25 = 772,292.25/x
3. Step 3: Cross multiply
   353,136x = 772,292.25 × 772,292.25
4. Step 4: Simplify right side
   353,136x = 596,435,319,410.06
5. Step 5: Solve for x
   x = 596,435,319,410.06/353,136
6. Step 6: Final answer
   x = 1,688,967.76