Finding the Third Proportional to 13,356,648 and 21,166,828.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,356,648 : 21,166,828.50 = 21,166,828.50 : x
2. Step 2: Convert to fraction form
   13,356,648/21,166,828.50 = 21,166,828.50/x
3. Step 3: Cross multiply
   13,356,648x = 21,166,828.50 × 21,166,828.50
4. Step 4: Simplify right side
   13,356,648x = 448,034,628,748,412.25
5. Step 5: Solve for x
   x = 448,034,628,748,412.25/13,356,648
6. Step 6: Final answer
   x = 33,543,942.22