Finding the Third Proportional to 128,509,300.50 and 195,777,091.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,509,300.50 : 195,777,091.50 = 195,777,091.50 : x
2. Step 2: Convert to fraction form
   128,509,300.50/195,777,091.50 = 195,777,091.50/x
3. Step 3: Cross multiply
   128,509,300.50x = 195,777,091.50 × 195,777,091.50
4. Step 4: Simplify right side
   128,509,300.50x = 38,328,669,556,199,376
5. Step 5: Solve for x
   x = 38,328,669,556,199,376/128,509,300.50
6. Step 6: Final answer
   x = 298,255,997.09