Finding the Third Proportional to 89,391,344 and 136,686,146

Step by Step Solution

1. Step 1: Write the proportion equation
   89,391,344 : 136,686,146 = 136,686,146 : x
2. Step 2: Convert to fraction form
   89,391,344/136,686,146 = 136,686,146/x
3. Step 3: Cross multiply
   89,391,344x = 136,686,146 × 136,686,146
4. Step 4: Simplify right side
   89,391,344x = 18,683,102,508,333,316
5. Step 5: Solve for x
   x = 18,683,102,508,333,316/89,391,344
6. Step 6: Final answer
   x = 209,003,485.93