Finding the Third Proportional to 3,951,537,939 and 7,803,138,685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,951,537,939 : 7,803,138,685.50 = 7,803,138,685.50 : x
2. Step 2: Convert to fraction form
   3,951,537,939/7,803,138,685.50 = 7,803,138,685.50/x
3. Step 3: Cross multiply
   3,951,537,939x = 7,803,138,685.50 × 7,803,138,685.50
4. Step 4: Simplify right side
   3,951,537,939x = 60,888,973,345,146,667,008
5. Step 5: Solve for x
   x = 60,888,973,345,146,667,008/3,951,537,939
6. Step 6: Final answer
   x = 15,408,930,468.36