Finding the Third Proportional to 13,291,740 and 19,915,435.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,291,740 : 19,915,435.50 = 19,915,435.50 : x
2. Step 2: Convert to fraction form
   13,291,740/19,915,435.50 = 19,915,435.50/x
3. Step 3: Cross multiply
   13,291,740x = 19,915,435.50 × 19,915,435.50
4. Step 4: Simplify right side
   13,291,740x = 396,624,571,154,660.25
5. Step 5: Solve for x
   x = 396,624,571,154,660.25/13,291,740
6. Step 6: Final answer
   x = 29,839,928.49