Finding the Third Proportional to 141,139,663.50 and 293,878,128

Step by Step Solution

1. Step 1: Write the proportion equation
   141,139,663.50 : 293,878,128 = 293,878,128 : x
2. Step 2: Convert to fraction form
   141,139,663.50/293,878,128 = 293,878,128/x
3. Step 3: Cross multiply
   141,139,663.50x = 293,878,128 × 293,878,128
4. Step 4: Simplify right side
   141,139,663.50x = 86,364,354,116,784,384
5. Step 5: Solve for x
   x = 86,364,354,116,784,384/141,139,663.50
6. Step 6: Final answer
   x = 611,907,042.82