Finding the Third Proportional to 12,791,175 and 19,680,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,791,175 : 19,680,799.50 = 19,680,799.50 : x
2. Step 2: Convert to fraction form
   12,791,175/19,680,799.50 = 19,680,799.50/x
3. Step 3: Cross multiply
   12,791,175x = 19,680,799.50 × 19,680,799.50
4. Step 4: Simplify right side
   12,791,175x = 387,333,868,959,200.25
5. Step 5: Solve for x
   x = 387,333,868,959,200.25/12,791,175
6. Step 6: Final answer
   x = 30,281,336.07