Finding the Third Proportional to 155,130 and 248,893.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,130 : 248,893.50 = 248,893.50 : x
2. Step 2: Convert to fraction form
   155,130/248,893.50 = 248,893.50/x
3. Step 3: Cross multiply
   155,130x = 248,893.50 × 248,893.50
4. Step 4: Simplify right side
   155,130x = 61,947,974,342.25
5. Step 5: Solve for x
   x = 61,947,974,342.25/155,130
6. Step 6: Final answer
   x = 399,329.43