Finding the Third Proportional to 8,493,152,139 and 12,739,729,302

Step by Step Solution

1. Step 1: Write the proportion equation
   8,493,152,139 : 12,739,729,302 = 12,739,729,302 : x
2. Step 2: Convert to fraction form
   8,493,152,139/12,739,729,302 = 12,739,729,302/x
3. Step 3: Cross multiply
   8,493,152,139x = 12,739,729,302 × 12,739,729,302
4. Step 4: Simplify right side
   8,493,152,139x = 162,300,702,688,237,420,544
5. Step 5: Solve for x
   x = 162,300,702,688,237,420,544/8,493,152,139
6. Step 6: Final answer
   x = 19,109,595,593.25