Finding the Third Proportional to 8,886,105,654 and 18,507,709,040

Step by Step Solution

1. Step 1: Write the proportion equation
   8,886,105,654 : 18,507,709,040 = 18,507,709,040 : x
2. Step 2: Convert to fraction form
   8,886,105,654/18,507,709,040 = 18,507,709,040/x
3. Step 3: Cross multiply
   8,886,105,654x = 18,507,709,040 × 18,507,709,040
4. Step 4: Simplify right side
   8,886,105,654x = 342,535,293,909,297,725,440
5. Step 5: Solve for x
   x = 342,535,293,909,297,725,440/8,886,105,654
6. Step 6: Final answer
   x = 38,547,290,258.15