Finding the Third Proportional to 30,603,726 and 64,661,452.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,603,726 : 64,661,452.50 = 64,661,452.50 : x
2. Step 2: Convert to fraction form
   30,603,726/64,661,452.50 = 64,661,452.50/x
3. Step 3: Cross multiply
   30,603,726x = 64,661,452.50 × 64,661,452.50
4. Step 4: Simplify right side
   30,603,726x = 4,181,103,439,409,756
5. Step 5: Solve for x
   x = 4,181,103,439,409,756/30,603,726
6. Step 6: Final answer
   x = 136,620,731.72