Finding the Third Proportional to 91,358,729,118 and 139,663,937,100

Step by Step Solution

1. Step 1: Write the proportion equation
   91,358,729,118 : 139,663,937,100 = 139,663,937,100 : x
2. Step 2: Convert to fraction form
   91,358,729,118/139,663,937,100 = 139,663,937,100/x
3. Step 3: Cross multiply
   91,358,729,118x = 139,663,937,100 × 139,663,937,100
4. Step 4: Simplify right side
   91,358,729,118x = 19,506,015,326,272,757,956,608
5. Step 5: Solve for x
   x = 19,506,015,326,272,757,956,608/91,358,729,118
6. Step 6: Final answer
   x = 213,510,143,087.46