Finding the Third Proportional to 91,680,780 and 137,521,206

Step by Step Solution

1. Step 1: Write the proportion equation
   91,680,780 : 137,521,206 = 137,521,206 : x
2. Step 2: Convert to fraction form
   91,680,780/137,521,206 = 137,521,206/x
3. Step 3: Cross multiply
   91,680,780x = 137,521,206 × 137,521,206
4. Step 4: Simplify right side
   91,680,780x = 18,912,082,099,694,436
5. Step 5: Solve for x
   x = 18,912,082,099,694,436/91,680,780
6. Step 6: Final answer
   x = 206,281,863.00