Finding the Third Proportional to 143,012.25 and 314,030.25

Step by Step Solution

1. Step 1: Write the proportion equation
   143,012.25 : 314,030.25 = 314,030.25 : x
2. Step 2: Convert to fraction form
   143,012.25/314,030.25 = 314,030.25/x
3. Step 3: Cross multiply
   143,012.25x = 314,030.25 × 314,030.25
4. Step 4: Simplify right side
   143,012.25x = 98,614,997,915.06
5. Step 5: Solve for x
   x = 98,614,997,915.06/143,012.25
6. Step 6: Final answer
   x = 689,556.30