Finding the Third Proportional to 13,424,044,320 and 18,665,060,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,424,044,320 : 18,665,060,620.50 = 18,665,060,620.50 : x
2. Step 2: Convert to fraction form
   13,424,044,320/18,665,060,620.50 = 18,665,060,620.50/x
3. Step 3: Cross multiply
   13,424,044,320x = 18,665,060,620.50 × 18,665,060,620.50
4. Step 4: Simplify right side
   13,424,044,320x = 348,384,487,966,939,873,280
5. Step 5: Solve for x
   x = 348,384,487,966,939,873,280/13,424,044,320
6. Step 6: Final answer
   x = 25,952,274,863.09