Finding the Third Proportional to 91,443,078 and 139,308,394.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,443,078 : 139,308,394.50 = 139,308,394.50 : x
2. Step 2: Convert to fraction form
   91,443,078/139,308,394.50 = 139,308,394.50/x
3. Step 3: Cross multiply
   91,443,078x = 139,308,394.50 × 139,308,394.50
4. Step 4: Simplify right side
   91,443,078x = 19,406,828,778,167,632
5. Step 5: Solve for x
   x = 19,406,828,778,167,632/91,443,078
6. Step 6: Final answer
   x = 212,228,516.39