Finding the Third Proportional to 144,990 and 294,070.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,990 : 294,070.50 = 294,070.50 : x
2. Step 2: Convert to fraction form
   144,990/294,070.50 = 294,070.50/x
3. Step 3: Cross multiply
   144,990x = 294,070.50 × 294,070.50
4. Step 4: Simplify right side
   144,990x = 86,477,458,970.25
5. Step 5: Solve for x
   x = 86,477,458,970.25/144,990
6. Step 6: Final answer
   x = 596,437.40