Finding the Third Proportional to 10,279,242,073 and 13,869,111,128

Step by Step Solution

1. Step 1: Write the proportion equation
   10,279,242,073 : 13,869,111,128 = 13,869,111,128 : x
2. Step 2: Convert to fraction form
   10,279,242,073/13,869,111,128 = 13,869,111,128/x
3. Step 3: Cross multiply
   10,279,242,073x = 13,869,111,128 × 13,869,111,128
4. Step 4: Simplify right side
   10,279,242,073x = 192,352,243,480,813,436,928
5. Step 5: Solve for x
   x = 192,352,243,480,813,436,928/10,279,242,073
6. Step 6: Final answer
   x = 18,712,687,386.36