Finding the Third Proportional to 153,939 and 240,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,939 : 240,628.50 = 240,628.50 : x
2. Step 2: Convert to fraction form
   153,939/240,628.50 = 240,628.50/x
3. Step 3: Cross multiply
   153,939x = 240,628.50 × 240,628.50
4. Step 4: Simplify right side
   153,939x = 57,902,075,012.25
5. Step 5: Solve for x
   x = 57,902,075,012.25/153,939
6. Step 6: Final answer
   x = 376,136.49