Finding the Third Proportional to 12,791,085.75 and 19,680,663.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,791,085.75 : 19,680,663.38 = 19,680,663.38 : x
2. Step 2: Convert to fraction form
   12,791,085.75/19,680,663.38 = 19,680,663.38/x
3. Step 3: Cross multiply
   12,791,085.75x = 19,680,663.38 × 19,680,663.38
4. Step 4: Simplify right side
   12,791,085.75x = 387,328,510,880,066.38
5. Step 5: Solve for x
   x = 387,328,510,880,066.38/12,791,085.75
6. Step 6: Final answer
   x = 30,281,128.47