Finding the Third Proportional to 258,030 and 607,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,030 : 607,123.50 = 607,123.50 : x
2. Step 2: Convert to fraction form
   258,030/607,123.50 = 607,123.50/x
3. Step 3: Cross multiply
   258,030x = 607,123.50 × 607,123.50
4. Step 4: Simplify right side
   258,030x = 368,598,944,252.25
5. Step 5: Solve for x
   x = 368,598,944,252.25/258,030
6. Step 6: Final answer
   x = 1,428,511.97