Finding the Third Proportional to 91,080,434 and 139,909,521

Step by Step Solution

1. Step 1: Write the proportion equation
   91,080,434 : 139,909,521 = 139,909,521 : x
2. Step 2: Convert to fraction form
   91,080,434/139,909,521 = 139,909,521/x
3. Step 3: Cross multiply
   91,080,434x = 139,909,521 × 139,909,521
4. Step 4: Simplify right side
   91,080,434x = 19,574,674,066,449,440
5. Step 5: Solve for x
   x = 19,574,674,066,449,440/91,080,434
6. Step 6: Final answer
   x = 214,916,345.99