Finding the Third Proportional to 65,191,437 and 138,155,188

Step by Step Solution

1. Step 1: Write the proportion equation
   65,191,437 : 138,155,188 = 138,155,188 : x
2. Step 2: Convert to fraction form
   65,191,437/138,155,188 = 138,155,188/x
3. Step 3: Cross multiply
   65,191,437x = 138,155,188 × 138,155,188
4. Step 4: Simplify right side
   65,191,437x = 19,086,855,971,315,344
5. Step 5: Solve for x
   x = 19,086,855,971,315,344/65,191,437
6. Step 6: Final answer
   x = 292,781,642.03