Finding the Third Proportional to 300,934,990 and 423,782,780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,934,990 : 423,782,780.50 = 423,782,780.50 : x
2. Step 2: Convert to fraction form
   300,934,990/423,782,780.50 = 423,782,780.50/x
3. Step 3: Cross multiply
   300,934,990x = 423,782,780.50 × 423,782,780.50
4. Step 4: Simplify right side
   300,934,990x = 179,591,845,048,311,168
5. Step 5: Solve for x
   x = 179,591,845,048,311,168/300,934,990
6. Step 6: Final answer
   x = 596,779,540.49