Finding the Third Proportional to 350,136 and 548,683.50

Step by Step Solution

1. Step 1: Write the proportion equation
   350,136 : 548,683.50 = 548,683.50 : x
2. Step 2: Convert to fraction form
   350,136/548,683.50 = 548,683.50/x
3. Step 3: Cross multiply
   350,136x = 548,683.50 × 548,683.50
4. Step 4: Simplify right side
   350,136x = 301,053,583,172.25
5. Step 5: Solve for x
   x = 301,053,583,172.25/350,136
6. Step 6: Final answer
   x = 859,818.99