Finding the Third Proportional to 300,753,108 and 478,557,307.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,753,108 : 478,557,307.50 = 478,557,307.50 : x
2. Step 2: Convert to fraction form
   300,753,108/478,557,307.50 = 478,557,307.50/x
3. Step 3: Cross multiply
   300,753,108x = 478,557,307.50 × 478,557,307.50
4. Step 4: Simplify right side
   300,753,108x = 229,017,096,561,649,568
5. Step 5: Solve for x
   x = 229,017,096,561,649,568/300,753,108
6. Step 6: Final answer
   x = 761,478,736.11