Finding the Third Proportional to 10,302,390 and 20,345,485.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,302,390 : 20,345,485.50 = 20,345,485.50 : x
2. Step 2: Convert to fraction form
   10,302,390/20,345,485.50 = 20,345,485.50/x
3. Step 3: Cross multiply
   10,302,390x = 20,345,485.50 × 20,345,485.50
4. Step 4: Simplify right side
   10,302,390x = 413,938,780,230,710.25
5. Step 5: Solve for x
   x = 413,938,780,230,710.25/10,302,390
6. Step 6: Final answer
   x = 40,178,908.02