Finding the Third Proportional to 12,791,089.50 and 19,680,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,791,089.50 : 19,680,667.50 = 19,680,667.50 : x
2. Step 2: Convert to fraction form
   12,791,089.50/19,680,667.50 = 19,680,667.50/x
3. Step 3: Cross multiply
   12,791,089.50x = 19,680,667.50 × 19,680,667.50
4. Step 4: Simplify right side
   12,791,089.50x = 387,328,673,245,556.25
5. Step 5: Solve for x
   x = 387,328,673,245,556.25/12,791,089.50
6. Step 6: Final answer
   x = 30,281,132.29