Finding the Third Proportional to 12,820,387.50 and 19,824,554.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,820,387.50 : 19,824,554.25 = 19,824,554.25 : x
2. Step 2: Convert to fraction form
   12,820,387.50/19,824,554.25 = 19,824,554.25/x
3. Step 3: Cross multiply
   12,820,387.50x = 19,824,554.25 × 19,824,554.25
4. Step 4: Simplify right side
   12,820,387.50x = 393,012,951,211,193.06
5. Step 5: Solve for x
   x = 393,012,951,211,193.06/12,820,387.50
6. Step 6: Final answer
   x = 30,655,309.85